66874002368839 has 8 divisors (see below), whose sum is σ = 66915827941248. Its totient is φ = 66832177687800.

The previous prime is 66874002368837. The next prime is 66874002368867. The reversal of 66874002368839 is 93886320047866.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66874002368839 - 2¹ = 66874002368837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66874002368837) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 213805614 + ... + 214118164.

It is an arithmetic number, because the mean of its divisors is an integer number (8364478492656).

Almost surely, 2^{66874002368839} is an apocalyptic number.

66874002368839 is a deficient number, since it is larger than the sum of its proper divisors (41825572409).

66874002368839 is a wasteful number, since it uses less digits than its factorization.

66874002368839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445685.

The product of its (nonzero) digits is 501645312, while the sum is 70.

The spelling of 66874002368839 in words is "sixty-six trillion, eight hundred seventy-four billion, two million, three hundred sixty-eight thousand, eight hundred thirty-nine".